libgo/match.sh

   1 #!/bin/sh
   2
   3 # Copyright 2016 The Go Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style
   5 # license that can be found in the LICENSE file.
   6
   7 # Given a source directory, returns the non-test Go files that should
   8 # be built for this target.  This implements Go's build constraints in
   9 # a shell script.  There is similar code in testsuite/gotest.
  10
  11 set -e
  12
  13 LANG=C
  14 LC_ALL=C
  15 LC_CTYPE=C
  16 export LANG LC_ALL LC_CTYPE
  17
  18 srcdir=""
  19 goarch=""
  20 goos=""
  21 extrafiles=""
  22 cmdlinetag="nosuchtag"
  23 cgotag="cgo"
  24
  25 for arg; do
  26     case "x$arg" in
  27         x--srcdir)
  28             srcdir=$2
  29             shift
  30             shift
  31             ;;
  32         x--srcdir=*)
  33             srcdir=`echo $1 | sed -e 's/^--srcdir=//'`
  34             shift
  35             ;;
  36         x--goarch)
  37             goarch=$2
  38             shift
  39             shift
  40             ;;
  41         x--goarch=*)
  42             goarch=`echo $1 | sed -e 's/^--goarch=//'`
  43             shift
  44             ;;
  45         x--goos)
  46             goos=$2
  47             shift
  48             shift
  49             ;;
  50         x--goos=*)
  51             goos=`echo $1 | sed -e 's/^--goos=//'`
  52             shift
  53             ;;
  54         x--extrafiles)
  55             extrafiles=$2
  56             shift
  57             shift
  58             ;;
  59         x--extrafiles=*)
  60             extrafiles=`echo $1 | sed -e 's/^--extrafiles=//'`
  61             shift
  62             ;;
  63         x--tag)
  64             cmdlinetag=$2
  65             shift
  66             shift
  67             ;;
  68         x--tag=*)
  69             cmdlinetag=`echo $1 | sed -e 's/^--tag=//'`
  70             shift
  71             ;;
  72         x--nocgo)
  73             cgotag="nosuchtag"
  74             shift
  75             ;;
  76         *)
  77             echo 1>&2 "unknown argument $arg"
  78             exit 1
  79             ;;
  80     esac
  81 done
  82
  83 cd $srcdir
  84
  85 gofiles=
  86 for f in *.go; do
  87     case $f in
  88         *_test.go)
  89             ;;
  90         *.go)
  91             gofiles="$gofiles $f"
  92             ;;
  93     esac
  94 done
  95
  96 if test "$gofiles" = ""; then
  97     echo 1>&2 "no non-test .go files in $srcdir"
  98     exit 1
  99 fi
 100
 101 gobuild() {
 102     line=$(echo "$1" | sed -e 's|//go:build ||')
 103     line=$(echo "$line" | sed -e 's/go1\.[0-9]\+/1/g' -e 's/goexperiment\./goexperiment/')
 104     line=" $line "
 105     wrap='[ ()!&|]'
 106     for ones in $goarch $goos $cgotag $cmdlinetag gccgo goexperimentfieldtrack; do
 107         line=$(echo "$line" | sed -e "s/\\(${wrap}\\)${ones}\\(${wrap}\\)/"'\11\2/g')
 108     done
 109     # 386 is a special case since it looks like a number to the shell.
 110     # We need it to be 0 if it's not $goarch.
 111     if test "$goarch" != "386"; then
 112         line=$(echo "$line" | sed -e "s/\\(${wrap}\\)386\\(${wrap}\\)/\10\2/g")
 113     fi
 114     (($line))
 115 }
 116
 117 matched=
 118 for f in $gofiles; do
 119     tag1=`echo $f | sed -e 's/^.*_\([^_]*\).go$/\1/'`
 120     tag2=`echo $f | sed -e 's/^.*_\([^_]*\)_[^_]*.go$/\1/'`
 121     if test x$tag1 = x$f; then
 122         tag1=
 123     fi
 124     if test x$tag2 = x$f; then
 125         tag2=
 126     fi
 127
 128     case "$tag1" in
 129         "") ;;
 130         $goarch) ;;
 131         $goos) ;;
 132         aix | android | darwin | dragonfly | freebsd | illumos | hurd | ios | js | linux | nacl | netbsd | openbsd | plan9 | solaris | windows | zos)
 133             tag1=nonmatchingtag
 134             ;;
 135         386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | ia64 | m68k | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | nios2 | ppc | ppc64 | ppc64le | riscv | riscv64 | s390 | s390x | sh | shbe | sparc | sparc64 | wasm)
 136             tag1=nonmatchingtag
 137             ;;
 138         *)
 139             # File name like x_amd64_random.go, where tag1=random.
 140             # Don't match based on tag2.
 141             tag2=
 142             ;;
 143     esac
 144
 145     case "$tag2" in
 146         "") ;;
 147         $goarch) ;;
 148         $goos) ;;
 149         aix | android | darwin | dragonfly | freebsd | hurd | ios | illumos | js | linux | nacl | netbsd | openbsd | plan9 | solaris | windows | zos)
 150             tag2=nonmatchingtag
 151             ;;
 152         386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | ia64 | m68k | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | nios2 | ppc | ppc64 | ppc64le | riscv | riscv64 | s390 | s390x | sh | shbe | sparc | sparc64 | wasm)
 153             tag2=nonmatchingtag
 154             ;;
 155     esac
 156
 157     if test x$tag1 = xnonmatchingtag -o x$tag2 = xnonmatchingtag; then
 158         continue
 159     fi
 160
 161     # Check for go:build line
 162     build=$(sed '/^package /q' < $f | grep '^//go:build ' | cat)
 163     if test -n "$build"; then
 164         if $(gobuild "$build"); then
 165             matched="$matched $srcdir/$f"
 166         fi
 167         continue
 168     fi
 169
 170     # No go:build line, check for +build lines.
 171     # Pipe through cat so that `set -e` doesn't affect fgrep.
 172     tags=`sed '/^package /q' < $f | grep '^// *+build ' | cat`
 173     omatch=true
 174     first=true
 175     match=false
 176     for tag in $tags; do
 177         case $tag in
 178             "//")
 179             ;;
 180             "+build" | "//+build")
 181                 if test "$first" = "true"; then
 182                     first=false
 183                 elif test "$match" = "false"; then
 184                     omatch=false
 185                 fi
 186                 match=false
 187                 ;;
 188             $goos | $goarch | $cgotag | $cmdlinetag | "gccgo" | "goexperiment.fieldtrack" | go1.[0-9] | go1.[0-9][0-9])
 189                 match=true
 190                 ;;
 191             "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag | "!gccgo" | "!goexperiment.fieldtrack" | "!"go1.[0-9] | "!"go1.1[0-7])
 192                 ;;
 193             *,*)
 194                 cmatch=true
 195                 for ctag in `echo $tag | sed -e 's/,/ /g'`; do
 196                     case $ctag in
 197                         $goos | $goarch | $cgotag | $cmdlinetag | "gccgo" | "goexperiment.fieldtrack" | go1.[0-9] | go1.[0-9][0-9])
 198                         ;;
 199                         "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag | "!gccgo" | "!goexperiment.fieldtrack" | "!"go1.[0-9] | "!"go1.1[0-7])
 200                             cmatch=false
 201                             ;;
 202                         "!"*)
 203                             ;;
 204                         *)
 205                             cmatch=false
 206                             ;;
 207                     esac
 208                 done
 209                 if test "$cmatch" = "true"; then
 210                     match=true
 211                 fi
 212                 ;;
 213             "!"*)
 214                 match=true
 215                 ;;
 216         esac
 217     done
 218
 219     if test "$match" = "false" -a "$first" = "false"; then
 220         omatch=false
 221     fi
 222
 223     if test "$omatch" = "true"; then
 224         matched="$matched $srcdir/$f"
 225     fi
 226 done
 227
 228 echo $matched $extrafiles
 229
 230 exit 0